<%

     String user_name=null;
     String data = null;
        
     user_name = request.getParameter("user_name");
     data = "Bienvenid@ " + user_name + " a Ajax !!! :D";
        
        response.setContentType("text/plain");  
        response.setCharacterEncoding("UTF-8"); 
        response.getWriter().write(data); 

%>